Nightmare-β

The Nightmare- is a firearm in Devil May Cry. It is found within the second shield chamber outside of the Colosseum in Mission 15. If the player does not obtain it then, it appears on the bed in the Mirror World.

Appearance
The Nightmare-β resembles Nightmare's hardened form. When activated, various parts will shift and move as it reveals parts and constricts to the user's arm. Most notably, the head will raise up and a barrel will point out from underneath it, while 6 claw-like tentacles wrap around the user's forearm.

Gameplay
The Nightmare-β is modeled after Nightmare that was formed in the Underworld. Because it is a similar weapon to Nightmare, it is ineffective against the larger bio-weapon. It uses DT power to fire green lasers that ricochet off of surfaces and can be charged for more powerful shots. It is quite weak when not charged, but with as little as three DT runes, it is able to fire several beams at once which can inflict massive damage even to DMD-level bosses, and is very useful for raising your Style rank.